LH1500AT/AAB/AABTR
1 Form A
Solid State Relay
FEATURES
• Current Limit Protection
• l/O Isolation, 5300 V
RMS
• Typical R
ON
20
Ω
• Load Voltage 350 V
• Load Current 150 mA
• High Surge Capability
• Linear, AC/DC Operation
• Clean Bounce Free Switching
• Low Power Consumption
• High Reliability Monolithic Receptor
• SMD Lead Available on Tape and Reel
AGENCY APPROVALS
• UL – File No. E52744
• BSI/BABT Cert. No. 7980
• FIMKO Approval
• CSA – Certification 093751
APPLICATIONS
• General Telecom Switching
– On/off Hook Control
– Ring Delay
– Dial Pulse
– Ground Start
– Ground Fault Protection
• Instrumentation
• Industrial Controls
• See Application Note 56
DESCRIPTION
The LH1500 is robust, ideal for telecom and ground
fault applications. It is a SPST normally open switch (1
Form A) that replaces electromechanical relays in many
applications. It is constructed using a GaAIAs LED for
actuation control and an integrated monolithic die for
the switch output. The die, fabricated in a high-voltage
dielectrically isolated technology, is comprised of a
photodiode array, switch control circuitry and MOSFET
switches. In addition, it employs current-limiting cir-
cuitry which meets FCC 68.302 and other regulatory
voltage surge requirements when overvoltage protec-
tion is provided.
4°
.100 (2.54)
.040 (1.016)
.020 (0.508)
.315 (8.00)
min.
.012 (0.31)
.008 (0.20)
Package Dimensions in Inches (mm)
DIP
Pin One ID.
3
.256 (6.50)
.248 (6.30)
4
5
6
2
1
S
6
DC
5
S'
4
S
S'
1
2
3
.343 (8.70)
.335 (8.50)
.039
(1.00)
Min.
4° Typ.
.020 (.051) Min.
.022 (0.55)
.018 (0.45)
.035 (0.90)
.031 (0.80)
.100 (2.54) Typ.
.300 (7.62)
Typ.
.150 (3.81)
.130 (3.30)
18° Typ.
.014 (.35)
.010 (.25)
.347 (8.82)
.300 (7.62)
.150 (3.81)
.110 (2.79)
SMD
.343 (8.71)
.335 (8.51)
Pin one I.D.
.256 (6.50)
.248 (6.30)
.050 (1.27) typ.
.052 (1.33)
.048 (1.22)
.150 (3.81)
.130 (3.30)
.0098 (.25)
.0040 (.10)
.395 (10.03)
.375 (9.63)
.300 (7.62)
typ.
.039
(0.99)
min.
3° to 7°
18°
Part Identification
Part Number
LH1500AT
LH1500AAB
LH1500AABTR
Description
6-pin DIP, Thru Hole
6-pin SMD
6-pin SMD, Tape and Reel
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–35
Recommended Operating Conditions
140
120
Load Current (mA)
100
80
60
40
20
0
-40
-20
0
20
40
60
80
Ambient Temperature (°C)
I
Fon
= 4 to 10 mA
I
Fon
= 2 mA
I
Fon
= 1 mA
Absolute Maximum Ratings,
T
A
=25
°
C
Stresses in excess of the Absolute Maximum Ratings can cause permanent
damage to the device. These are absolute stress ratings only. Functional opera-
tion of the device is not implied at these or any other conditions in excess of
those given in the operational sections of the data sheet. Exposure to maximum
rating conditions for extended periods can adversely affect device reliability.
Ambient Temperature Range ........................................... –40 to +85°C
Storage Temperature Range .......................................... –40 to +150°C
Soldering Temperature (t=10 s max.) ......................................... 260°C
Isolation Test Voltage (for 1.0 s) ........................................... 5300 V
RMS
Isolation Resistance
V
IO
=500 V,
T
A
=25°C ............................................................
≥
10
12
Ω
V
IO
=500 V,
T
A
=100°C ..........................................................
≥
10
11
Ω
SSR Output Power Dissipation (continuous)............................ 550 mW
LED Continuous Forward Current ............................................... 50 mA
LED Reverse Voltage (
I
R
≤
10 mA) ................................................. 8.0 V
DC or Peak AC Load Voltage (
I
L
≤
50 mA) .................................... 350 V
Continuous DC Load Current at 25°C
Bidirectional...........................................................................150 mA
Unidirectional......................................................................... 250 mA
Electrical Characteristics,
T
A
=25
°
C
Minimum and maximum values are testing requirements. Typical values are characteristics of the device and are the result of
engineering evaluations. Typical values are for information only and are not part of the testing requirements.
Parameter
Input
LED Forward Current, Switch Turn-on
LED Forward Current, Switch Turn-off
LED Forward Voltage
Output
ON-resistance, ac/dc: Pin 4 (±) to 6 (±)
ON-resistance, dc: Pin 4, 6 (+) to 5 (-)
OFF-resistance
Current Limit
ac/dc
pin 4 (±) to 6 (±)
Off-state Leakage Current
R
OFF
R
ON
—
3.0
0.5
230
18
4.6
300
255
25
6.25
—
370
Ω
Ω
G
Ω
mA
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=100 mA
I
F
=0 mA,
V
L
=±100 V
I
F
=5.0 mA, t=5.0 ms
V
L
±6.0 V
I
F
=0 mA,
V
L
=±100 V
I
F
=0 mA,
V
L
=±350 V
I
F
=0 mA,
V
L
=1.0 V
I
F
=0 mA,
V
L
=50 V
I
F
=5.0 mA
I
Fon
I
Foff
V
F
—
0.2
1.15
0.9
0.8
1.25
2.0
—
1.45
mA
mA
V
I
L
=100 mA, t=10 ms
V
L
±300 V
I
F
=10 mA
Symbol
Min.
Typ.
Max.
Units
Test Conditions
I
LMT
I
O
—
—
0.32
73.4
33
10
0.2
200
1.0
—
—
—
nA
mA
pF
pF
µV
Output Capacitance, Pin 4 to 6
C
O
—
—
Switch Offset
Transfer
Input/Output Capacitance
Turn-on Time
Turn-off Time
V
OS
—
C
ISO
t
on
t
off
—
—
—
0.71
0.338
0.63
—
2.0
2.0
pF
ms
ms
V
ISO
=1.0 V
I
F
=5.0 mA,
I
L
=50 mA
I
F
=5.0 mA,
I
L
=50 mA
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–36
Typical Performance Characteristics
Figure 1. LED Voltage vs. Temperature
1.6
1.5
LED Forward Voltage (V)
1.4
1.3
1.2
1.1
I
F
=1.0 mA
I
F
=2.0 mA
I
F
=5.0 mA
I
F
=10 mA
–20
0
20
40
60
Ambient Temperature (°C)
80
I
F
=20 mA
LED Forward Current for Switch
Turn-on (%), Normalized to 25°C
Figure 4. LED Current for Switch Turn-on vs. Temperature
120
I
F
=50 mA
90
I
L
= 100 mA
60
30
0
1.0
–40
-30
-40
-20
0
20
40
60
80
Ambient Temperature (°C)
Figure 2. LED Forward Current vs. LED Forward Voltage
120
Figure 5. LED Dropout Voltage vs. Temperature
1.25
LED Forward Current (mA)
100
LED Forward Voltage (V)
80
60
40
T=85˚C
T=25˚C
T=-40˚C
1.2
I
L
=100mA
1.15
1.1
20
0
0
0.5
1
1.5
2
LED Forward Voltage (V)
1.05
1
-40
-20
0
20
40
60
80
Temperature (°C)
Figure 3. LED Reverse Current vs. LED Reverse Voltage
10
Figure 6. Current Limit vs. Temperature
40
Change in Current Limit (%)
Normalized to 25°C
30
20
10
0
–10
–20
–30
–40
–40
–20
0
20
40
60
80
I
F
= 5.0 mA
t = 5.0 ms
V
L
=
SEE ELEC. CHAR
.
LED Reverse Current (µA)
8
T=-40˚C
T=25˚C
T=85˚C
6
4
2
0
0
8
16
24
32
40
48
Ambient Temperature (°C)
LED Reverse Voltage (V)
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–37
Figure 7. Load Current vs. Load Voltage
400
Figure 10. Switch Capacitance vs. Applied Voltage
50
40
300
Load Current (mA)
T=25°C
200
T=85°C
Capacitance (pF)
T=-40°C
30
I
F
=0mA
20
100
I
F
=5 mA
0
0
1
2
3
4
5
Load Voltage (V)
10
0
0
10
20
30
40
50
60
70
80
90
100
Applied Voltage (V)
Figure 8. ON-Resistance vs. Temperature
40
Change in Ron (%) norm. to 25˚C
30
Figure 11. Insertion Loss vs. Frequency
0.14
0.12
Insertion Loss (dB)
0.1
0.08
0.06
0.04
R
L
=600Ω
0.02
0
10
2
20
10
0
-1
- 20
-30
-40
- 40
I
F
=5mA
I
L
=50mA
- 20
0
20
40
60
80
10
3
Temperature (˚C)
10
4
Frequence (Hz)
10
5
Figure 9. Variation in ON-Resistance vs. LED Current
4
I
L
=50mA
ON-Resistance Variation (%),
norm. @IF=5mA
3
Figure 12. Leakage Current vs. Applied Voltage
1000
Off-State Leakage Current (nA)
100
2
10
1
1
0
0.1
T=85˚C
T=70˚C
T=50˚C
T=25˚C
I
F
=0mA
-1
0
4
8
12
16
20
LED Forward Current (mA)
0.01
0
100
200
300
400
500
Load Voltage (V)
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–38
Figure 13. Output Isolation
120
100
80
60
40
20
0
10
2
V
P
=10V
R
L
=50Ω
Figure 16. Switch Offset Voltage vs. Temperature
3.5
I
F
= 5.0 mA
3.0
Switch Offset Voltage (µV)
2.5
2.0
1.5
1.0
0.5
0
Isolation (dB)
20
30
40
50
60
70
80
90
10
3
10
4
Frequency (Hz)
10
5
10
6
Ambient Temperature (°C)
Figure 14. Switch Breakdown Voltage vs. Load Current
50
Figure 17. Switch Offset Voltage vs. LED Current
0.6
0.5
0.4
0.3
0.2
0.1
0
0
5
10
15
20
25
40
Load Current (µA)
T=-40˚C
T=25˚C
T=85˚C
30
20
I
F
=0mA
I
L
<50uA
10
0
0
90
180
270
360
450
Load Voltage (V)
Switch Offset Voltage (µV)
LED Forward Current (mA)
Figure 15. Switch Breakdown Voltage vs. Temperature
8
Change in Breakdown Voltage (%)
Normalized to 25°C
6
Figure 18. Turn-On Time vs. Temperature
30
Change in Turn-On Time (%),
norm. to 25˚C
20
10
0
-10
-20
-30
-40
I
F
=5 mA
I
L
=50 mA
4
2
0
–2
–4
–6
–8
–40
–20
0
20
40
60
80
-20
0
Ambient Temperature (°C)
20
40
Temperature (˚C)
60
80
Document Number: 83804
Revision 06-March-02
www.vishay.com
3–39
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